Spool



Eune 21, 1938.

Filed June 2'7, 1936 1571. Ymao C. Ha wan/v.

Patented June 21, 1938 PATENT OFFICE SPOOL Hilyard C. Howsam, Chicago, 111., asslgnor to Hubbard Spool Company, Chicago, 111., a corporation of Illinois Application June 27,1936, Serial No. 87,612 2 Claims. (Cl. 242-423) My invention relates to spools adapted for the general purpose of supporting yarn, thread, or the like, but which are designed particularly for supporting wire, the spool being thereforemade entirely of metallic parts so that after the wire has been Wound thereon it may be subjected to heat for annealing or other treatments.

An important object is to construct the entire spoolof comparatively light sheet metal parts, properly strengthened and secured together to produce a rigid, strong and durable structure.

Another object is to provide an improved arrangement which will eliminate corner crevices between the barrel structure and the heads and to provide solid or-unbroken comers so that there will be no chance for wire being caught in crevices during the winding or unwinding operation.

A structure embodying the various features of my invention is shown on the drawing, in which drawing:

Figure 1 is an end view of a spool; v

Figure 2 is an enlarged side elevation partly in diametral section; and

Figure 3 is an enlarged diametral section to more clearly show the arrangement. l

I offset the end portion l3 of the tube l2 radially inwardly a distance equal to the thickness of the flanges ll so that the deflectedportions will flt snugly in the flanges, and the ends M of the offset portions are deflected and drawn outwardly around the outsides of the corners between the heads H) and their flanges l I, suchdeflection and drawing causing the exertion of tension against p the outer sides of the heads II) to hold the edges of the flanges H and the offset shoulders l5" intimately together while the flanges and offset end portions are rigidly secured together as by means of spot welding, as indicated at l5.

. Each of the heads ID has a strengthening disc or plate It of heavier gauge sheet metal around the outer edge of which the peripheral portions of the heads lllrare deflected and rolled, as indicated at H, the plates being thus securely. clamped against the outer faces of the heads and held rigidly in alignment therewith.

' structure and also to provide ventilation for the The intermediate portions l6 of the reinforcing plates are deflected outwardly a distance preferably equal to the thickness of .the head metal to provide clearance space for the deflected over ends It of the offset portions l3, so that the 5 outer faces of the deflected portions I6 of the reinforcing plates will be flush with the outer faces of the rolled over ends ll of the heads inorder that the spool will present uniplanar seating surfaces at its ends for firmer seating of the spools on supports or for stacking thereof.

' The reinforcing plates l6 have each an axial passageway 18, each passageway receiving an end I of the sheet metal arbor receiving tube l9 extending through the spool. The ends of the 15 arbor tube are deflected laterally against the outer faces of the inner portions of the plates 16 r for holding the plates in rigid and properly spaced position. Preferably the plate edges surrounding the passageways l8 have notches 20 for receiving tongues 2| formed in the ends of the arbor tube, the tongues after extending through the notches being deflected against the outer faces of the plates It, the arbor tube, with this tongue and groove connection, resisting relative rotational or torsional displacement of the spool and portions. If desired, the heads Ill and the reinforcing plates'lt may be welded together at suitable spots to prevent relative displacement and to strengthen the structure. To lighten the -crevises or any irregularities which might disturb the proper uniform winding of the wire on the spool. As the spool is entirely of metal, it 45 may, after being wound with wire, be subjected to heat for annealing or other treatment of the wire, and then, after such heating process, the openings 22 in the reinforcing plates will permit ventilation for cooling of the wire. 50

I have shown a. practical and eflicient embodiment of the various features of my invention, but I do not desire to be limited to the exact construction, arrangement and operation shown and described, as changes and modifications may 55 be made'wlthout departing fromthe scope of the invention.

I claim as my invention:

1. In a spool for supporting thread, wire or the like, a sheet metal head having a portion deflected inwardly to form a comparatively short flange forming the outer portion of the spool barrel, a tube forming the major portion of the barrel, the outer portion of said. tube being sharply offset radially inwardly a distance corresponding to the thickness of said flange to form a seat for the flange and to provide a shoulder against which-the flange end abuts to form a completely closed joint, the end of said oifset portion being deflected around the corner between the flangeand head and against the outer-face of the head for holding the head with the flange end intimately against said shoulder to maintain the closed joint.

2. In a spool of the class described, sheet metal heads each having a portion deflected inwardly to form a comparatively short flange and said flanges forming the outer portions of the spool concentric with said heads and engaging the outer surfaces thereof, said plates having central openings, and an arbor receiving tube extending through said openings and having its ends interlocked with said plates whereby toexert tension on said plates for holding said plates intimately against the outer faces of the heads and against the deflected ends of said oifset portions to hold said portions intimately against the outer faces of said heads. a

HILYARD C. .HOWSAM. 

